
Chautauqua County
- State:
- New York
Chautauqua County's estimated 2025 population is 123,985 with a growth rate of -0.36% in the past year according to the most recent United States census data. Chautauqua County is the 23rd largest county in New York. The 2010 population was 134,726 and has seen a growth of -7.97% since that time.